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The generator of AM EMFs consists of a battery-driven radiofrequency (RF) EMF generator connected to a 1.5 m long 50 ? coaxial cable, to the other end of which a stainless-steel spoon-shaped mouthpiece is connected via an impedance transformer. The RF source of the device corresponds to a class C amplifier operating at 27.12 MHz. The carrier frequency is AM with a modulation depth of 85±5%, whereas the modulation frequency is generated by a digital direct synthesiser with a resolution of 10-7. The treatment sequence is controlled by a microcontroller (Atmel AT89S8252, Fribourg, Switzerland), that is, duration of session, sequence of modulation frequencies and duration of each sequence can be programmed via PC over a RS232 interface. The RF output is adjusted to 100 mW into a 50 ? load, which results in an emitting power identical to that of the device used for the treatment of insomnia.
RAR Rotate Accumulator Right Through Carry Instruction This instruction rotates the contents of the accumulator towards right by one bit. The D 7 bit moves to D 6 posi
#Explain charging and discharging of the capacitor ..
Q. A dc shunt machine has an armature winding resistance of 0.12 and a shunt-?eld winding resistance of 50 . The machine may be run on 250-V mains as either a generator or a mot
what is the difference between latch and flipflop
Determine the Service and Backwash Rates The system on site is a pressure sand filter, with a service curve. The filter is backwashed using the feed pump, at a higher flow rate, s
Followings are some disadvantage a. Higher latching and holding current b.Higher on state voltage drop and power losses c.Higher gate current d.Higher gat
Q. To answer the following question, please refer to the figure below. Concentrating only at the upper right quadrant, discuss the foreign exchange market equilibrium. Answer:
Q. Explain the classification of amplifiers on the biasing conditions? Based on the amount of transistor bias and amplitude of the input signal, amplifiers can be classified as
Q. Explain the working of a darlington pair? This is two transistors connected together so that the current amplified by the first is amplified further by the second transistor
Q. What are transmission bridges? How do they assist in satisfying the connectivity? Ans: A typical transmission bridge is demonstrated in figure. Series capacitance and shunt
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